1结构特点:第一个as为副词,修饰形容词或副词的原级。第二个as或为连词,引导状语从句;也可是介词,其后加名词或代词。
2否定式not as/so...as...不如……
3表达倍数关系句型时则表达为:倍数+as...as...
4当as...as中间有名词时,应采用如下格式:
as+adj.+a/an+n.+as或as+adj.+n.复数或不可数+as
5as...as one can/could=as...as possible尽可能……
Obviously,the boy doesn’t work as hard as many of his classmates.
显然,这个男孩不像他的许多同学那么刻苦。
[特别提醒]
在as+adj.+a/an+n.+as结构中形容词放在不定冠词a/an之前,同样的结构还有:
so/too/how+adj.+a/an+n.+...
[夯实基础]
(1)You must help him as much as possible.
You must help him as much as you can. (改为复合句)
(2)她的声音像她妈妈的一样甜美。(翻译句子)
She has as sweet a voice as her mother.(as...as)
4单元语法——用被动语态改写下列句子
(1)He will plant more trees.
→More trees will be planted by him.
(2)She will take care of the children.
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